Android Lollipop和更高版本的语音通话录音不工作

Question

我在AndroidLollipop和更高版本中录制语音通话时遇到问题。通过此代码，我能够录制我的声音，但无法录制其他人的声音。

    public void startRecording() {
    if (recording == false) {


        Log.e("here", "--------Recorder_Sarted------" + fname);
        SimpleDateFormat sdf = new SimpleDateFormat("ddMMyyyy");
        int randomPIN = (int) (Math.random() * 9000) + 1000;
        recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_COMMUNICATION);
        recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        String file = Environment.getExternalStorageDirectory().toString();
        String filepath = file + "/Aeris/Recording";
        File dir = new File(filepath);
        dir.mkdirs();
        Log.e("here ", "----------------" + sdf.format(Calendar.getInstance().getTime()) + " " + fname + " " + type);
        filepath += "/" + type + "-" + fname + "-" + sdf.format(Calendar.getInstance().getTime()) + "-" + randomPIN + ".3gp";
        recorder.setOutputFile(filepath);

        try {
            recorder.prepare();
        } catch (IllegalStateException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        recorder.start();
        recording = true;
    }
}

此代码在androidLollipop版本下运行良好。请帮我解决这个问题

Answer 1

音频源VOICE_COMMUNICATION到麦克风（麦克风）

recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_COMMUNICATION);

在Moto g2（Android6.0），联想（Android5.0）中测试，其工作正常。